:root{--bg: #fbfaf7;--card: #ffffff;--panel: #f2f1ec;--ink: #16181d;--ink-2: #45495380;--ink-2: #454953;--ink-3: #6b7280;--line: #e2e0d9;--brand: #1d3f6e;--brand-ink: #1d3f6e;--brand-soft: #e8eef7;--ok: #1a7f4b;--ok-soft: #e6f4ec;--warn: #9a3412;--warn-soft: #fdf0e8;--radius: 10px;--shell: 68rem;color-scheme:light}:root[data-theme=dark]{--bg: #14161a;--card: #1c1f25;--panel: #191b20;--ink: #eceef2;--ink-2: #b3b8c2;--ink-3: #8b919c;--line: #2c3038;--brand: #7ba6dd;--brand-ink: #9dbde8;--brand-soft: #1e2836;--ok: #4ec38a;--ok-soft: #16281f;--warn: #f0a882;--warn-soft: #2a1c15;color-scheme:dark}*,*:before,*:after{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;text-rendering:optimizeLegibility}h1,h2,h3{line-height:1.25;font-weight:700;letter-spacing:-.01em}h1{font-size:clamp(1.6rem,1.2rem + 1.8vw,2.35rem);margin:0 0 12px}h2{font-size:clamp(1.25rem,1.1rem + .7vw,1.6rem);margin:2rem 0 12px}h3{font-size:1.08rem;margin:1.5rem 0 8px}a{color:var(--brand-ink);text-underline-offset:2px}a:hover{text-decoration:none}p{margin:0 0 14px}ul,ol{margin:0 0 14px;padding-inline-start:1.3em}li{margin-bottom:6px}.shell{max-width:var(--shell);margin-inline:auto;padding-inline:18px}.section{padding-block:34px}.section--tint{background:var(--panel);border-block:1px solid var(--line)}.lede{font-size:1.06rem;color:var(--ink-2)}.prose{max-width:44rem}.site-head{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:saturate(150%) blur(8px);border-bottom:1px solid var(--line)}.site-head__in{display:flex;align-items:center;gap:16px;min-height:58px}.brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:inherit;font-weight:700}.brand__mark{width:26px;height:26px;flex:none;border-radius:6px;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800}.brand__txt{display:flex;flex-direction:column;line-height:1.15}.brand__txt b{font-size:.95rem}.brand__txt span{font-size:.72rem;color:var(--ink-3);font-weight:500}.nav{display:flex;gap:2px;margin-inline-start:auto;flex-wrap:wrap}.nav a{padding:7px 11px;border-radius:7px;text-decoration:none;color:var(--ink-2);font-size:.91rem;font-weight:500;white-space:nowrap}.nav a:hover{background:var(--panel);color:var(--ink)}.nav a[aria-current=page]{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}.icon-btn{background:none;border:1px solid var(--line);border-radius:7px;width:34px;height:34px;display:grid;place-items:center;color:var(--ink-2);cursor:pointer;flex:none}.icon-btn:hover{background:var(--panel);color:var(--ink)}.i-sun{display:none}:root[data-theme=dark] .i-sun{display:block}:root[data-theme=dark] .i-moon{display:none}@media(max-width:860px){.nav{display:none}.nav--mobile{display:flex;overflow-x:auto;gap:4px;padding:8px 18px 10px;border-bottom:1px solid var(--line)}.nav--mobile a{background:var(--panel)}}@media(min-width:861px){.nav--mobile{display:none}}.grid{display:grid;gap:14px}.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.grid--3{grid-template-columns:repeat(auto-fill,minmax(215px,1fr))}.grid--4{grid-template-columns:repeat(auto-fill,minmax(165px,1fr))}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.card--link{text-decoration:none;color:inherit;display:block;transition:border-color .12s,transform .12s}.card--link:hover{border-color:var(--brand);transform:translateY(-1px)}.card__title{margin:0 0 4px;font-weight:650;font-size:1rem}.card__meta{margin:0;font-size:.85rem;color:var(--ink-3)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 17px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;cursor:pointer;font-family:inherit}.btn--primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn--primary:hover{filter:brightness(1.08)}.btn--ghost:hover{background:var(--panel)}.btn--lg{padding:13px 22px;font-size:1rem}.btn--block{width:100%}.btn[disabled]{opacity:.5;cursor:not-allowed}.cta-row{display:flex;flex-wrap:wrap;gap:10px}.tag{display:inline-block;padding:3px 9px;border-radius:999px;font-size:.78rem;font-weight:600;background:var(--panel);color:var(--ink-2)}.tag--brand{background:var(--brand-soft);color:var(--brand-ink)}.tag--star{background:var(--ok-soft);color:var(--ok)}.q{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}.q+.q{margin-top:12px}.q__num{font-size:.8rem;color:var(--ink-3);font-weight:600}.q__text{margin:4px 0 10px;font-weight:650;font-size:1.02rem}.q__text a{color:inherit;text-decoration:none}.q__text a:hover{color:var(--brand-ink);text-decoration:underline}.answers{margin:0;padding-inline-start:1.1em}.answers li{color:var(--ink)}.answer-box{background:var(--ok-soft);border:1px solid color-mix(in srgb,var(--ok) 30%,transparent);border-radius:8px;padding:13px 16px;margin:14px 0}.answer-box__label{font-size:.8rem;font-weight:700;color:var(--ok);text-transform:uppercase;letter-spacing:.04em;margin:0 0 6px}.note{background:var(--warn-soft);border-inline-start:3px solid var(--warn);border-radius:0 8px 8px 0;padding:11px 14px;margin:14px 0;font-size:.93rem}.note strong{color:var(--warn)}.quiz__bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}.quiz__progress{flex:1;min-width:120px;height:6px;background:var(--panel);border-radius:3px;overflow:hidden}.quiz__progress i{display:block;height:100%;background:var(--brand);transition:width .25s}.choices{list-style:none;margin:0;padding:0;display:grid;gap:8px}.choice{display:block;width:100%;text-align:start;padding:12px 15px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:inherit;font:inherit;cursor:pointer}.choice:hover{border-color:var(--brand)}.choice[data-state=picked]{border-color:var(--brand);background:var(--brand-soft)}.choice[data-state=right]{border-color:var(--ok);background:var(--ok-soft)}.choice[data-state=wrong]{border-color:#b91c1c;background:#fdeaea}:root[data-theme=dark] .choice[data-state=wrong]{background:#2a1616}.score{font-size:2.6rem;font-weight:800;line-height:1}.crumbs{font-size:.85rem;color:var(--ink-3);padding-block:12px 0}.crumbs a{color:var(--ink-3)}.crumbs span{margin-inline:6px}.link-list{list-style:none;margin:0;padding:0}.link-list li{margin-bottom:7px}.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.facts>div{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:11px 13px}.facts dt{font-size:.78rem;color:var(--ink-3);margin:0}.facts dd{margin:2px 0 0;font-weight:700;font-size:1.12rem}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.94rem}th,td{text-align:start;padding:9px 11px;border-bottom:1px solid var(--line)}th{font-weight:650;color:var(--ink-2)}.site-foot{border-top:1px solid var(--line);background:var(--panel);padding-block:26px;margin-top:40px;font-size:.9rem}.site-foot h4{margin:0 0 8px;font-size:.88rem}.foot-note{color:var(--ink-3);font-size:.84rem;margin-top:18px}.skip{position:absolute;inset-inline-start:-9999px}.skip:focus{inset-inline-start:12px;top:10px;background:var(--card);padding:8px 14px;border-radius:8px;z-index:50}.ad{display:block;margin:22px auto;text-align:center;overflow:hidden}